Traction apparatus.



No. 799,337. PATENTED SEPT. 12, 1905. 'N. HISS & H. G. DE BUREN.

TRACTION APPARATUS.

APPLICATION FILED 001 21, 1902. RENEWED AUG.5,1905.

3 SHEETSSHEET 1.

ANDREW. u. Grwuu ca, Pnamumaflmosns. wAsmnmanJn c No. 799,337. PATENTBD SEPT. 12, 1905.

N. HISS & H. G. DE BUREN.

TRAGTION'APPARATUS.

APPLICATION FILED OCT. 21, 1902. RENEWED AUG. 5,1905.

3 SHEETSSHEET 2.

No. 799,337. PATENTED SEPT. 12, 1905. N. HISS & H. G. DE BUREN.

TRACTION APPARATUS.

APPLICATION FILED 0OT.21,1902. nnnnwnn we. 5,1005.

s sums-sum 3.

WM) Y TYL LL Xvi Z52- TTNITED STATES PATENT OFFICE.

NELSON HISS AND HENRI (2.. DE BUREN, OF NEW YORK, N. Y., ASSIGNORS, BY MESNE ASSIGNMENTS, TO OTIS ELEVATOR COMPANY, A OORPORA- TION OF NEW J ERSEY.

TRACTION APPARATUS.

Specification of Letters Patent.

Patented Sept. 12, 1905.

To all whom, it may concern:

Be it known that we,NELsON HISS and HENRI G. DE BUREN, citizens of the United States, residing in the city, county, and State of New York, have invented a certain new and useful Improvement in Traction Apparatus, of which the following is a specification.

The invention herein shown and claimed is subsidiary to that shown in patent to Nelson Hiss for traction apparatus, No. 718,7 62, of January 20, 1903.

Our present invention has reference to an improved means for operating elevators and the like.

This device belongs to that class of traction apparatus wherein an operating-cable is used to which motion is imparted by one or more similar view of another form of our apparatus wherein the cable is anchored at one end, the other end being provided with a tensionweight or equivalent device; and Fig. 3 shows a modified form of our invention.

In Fig. 1 the elevator-car is shown at 1 supported by a cable 2, passing over pulleys 3 and 1 and having its opposite end attached to a movable frame or carrier 5, which may be termed the main carrier. This frame preferably carries all or a part of the counterweights 6; but this is not essential to our invention.

The carrier 5 is connected by an intermediate cable 7 running over the pulley 8 and attached at its opposite end to the auxiliary carrier 9. Movable sheaves 10 and 11 are attached to the main and auxiliary carriers, respectively, and over these is passed the driving-cable proper, 12.

One end of the cable 12 is anchoredas, for

instance, to a spring attachment l8while It is to be understood that our invention is not limited to this precise means for yielding fastening of the cable nor to the arrangement of cable exactly as shown as long as equivalents are used for the devices herein shown and described.

As shown, the driving-cable 12 extends from its anchorage 13 over sheave 10, thence over a driving drum or drums, pulley or pulleys, as 15, driven by an electric motor 16 or by any preferred means of propulsion, from 15 over the second sheave 11, and thence to the an: chorage 1 1.

It will be evident that according as the drum or pulley 15 stands still or is rotated in one or the other direction the carriers 5 and 9 stand still or move one way or the other. Since one of these carriers 5 has an operative connection (the cable 2) with the car 1, said car will itself be moved one way or the other as the pulley 15 moves.

In Fig. 2 a tension-weight 17 is shown on one end of the cable 12, the driving-pulley 15 being placed between said weight and a rigid anchorage 18. The other elements are the same as in Fig. 1. It will be seen that by use of this arrangement the whole tension exerted by the weight 17 or either spring 13 1 1 is transmitted equally to both sides of the pulley 15, thereby avoiding all rotative tendency one way or the other due to said tension device. This remains true whether the car 1 be at rest or in motion.

The use of more or less cables and pulleys than are shown and described herein will not involve a departure from the spirit of our invention as long as the various parts are arranged and cooperate as called for in the claims.

The use of two carriers separate from the car, as shown in Figs. 1 and 2, is not essential to this invention. As shown in Fig. 3, the auxiliary carrier 9 can be made to carry the car or cage 1, and, if desired, a pair of sheaves 19 can be substituted for the sheave 1-1. The entire counterweight will then be preferably carried by the carrier 5. In this modification the pulleys 19 are provided with suitable supports beneath the car, which constitute the auxiliary carrier, and this carrier is directly attached to the car.

It is obvious that the structure shown in Fig. 3 will operate in the same manner as that shown in the other figures, the tension-weight 17 remaining stationary and being therefore replaceable, if desired, by a spring.

What we claim is- 1. In traction apparatus, a car and a carrier, connections between them whereby when one moves the other is caused to move oppositely, a movable sheave on one of them, an auxiliary carrier so connected with said movable sheave as to move simultaneously and oppositely with relation thereto and a second movable sheave thereon; in combination with a driving-pulley and a driving-cable having stationary ends and passing over said drivingpulley and said two movable sheaves.

2. In traction apparatus, a car, a main carrier, a cable joining them, an auxiliary carrier connected to said main carrier so as to move simultaneously and oppositely with relation thereto and a movable sheave on each carrier; in combination with a driving-pulley and a cable so arranged over said pulley and sheaves that when the driving-pulley is operated thercis always a stationary section of cable on one side of said movable sheaves and a moving section of cable between said sheaves.

3. In traction apparatus, a car, a main carrier, a cable joining them, an auxiliary carrier connected to said main carrier so as to move simultaneously and oppositely with relation thereto and a movable sheave on each carrier; in combination with a driving-pulley, a cable anchored at one end and passing over said sheaves and pulley and a tension device attached to the opposite end of said cable.

4. In an elevator, a main carrier, an auxiliary carrier, a cable joining them, a car directly attached to said auxiliary carrier and a movable sheave on each carrier; in combination with a driving-pulley and a cable so arranged over said pulley and sheaves that when the driving-pulley is operated there is always a stationary section of cable on one side of said movable sheaves and a moving section of cable between said sheaves.

NELSON HISS. HENRI G. DE BUREN.

Witnesses:

CHAS. F. HALSTED, HAROLD S. MAOKA E. 

